EE3_Appliances

Introduction:

Consumers are naturally concerned about the total cost of all the energy they consume. The cost charged by the electrical utility (PECO in our area) can be calculated by multiplying the power rating of the device and its time of use. Even a low level of power consumption will add up to a large utility bill, if the device is operating continuously!

Activity:

• In today's lesson, you will operate a simulation that allows you to see how quickly appliances consume energy. In this simulation, you will have three different outlets for appliances, and you can choose which appliances to plug in. The time frame is speeded up to allow you to see how quickly each appliance consumes energy. If you get an error message, try clicking the orange "Next Applet" link in the upper right corner of the window!

Click image to open simulation.

Click image to access Quia Exercise

• You will need to use the simulation as you answer the questions in the Quia exercise, and you are welcome to work with a neighboring student on the exercise.

Assessment

1 Quality Point

Exercise is attempted with some success.

2 Quality Points

Exercise is attempted, and mostly successful.

3 Quality Points

Exercise is fully successful, regardless of number of attempts.

4 Quality Points

Exercise is supplemented with a comparison of two appliances that do the same job with a significant difference in power demands. Speculate on the reasons for the difference. NEW: Submit by email.

5 Quality Points

Please contact Mr. Cox if you are interested in pursuing the fifth quality point, as a new model is being considered!